Clutch slave cylinder for hybrid electric vehicles

Abstract

The invention discloses a clutch slave cylinder for hybrid electric vehicles, which comprises a main cylinder body and a booster cylinder body coaxially connected with the same. A booster cylinder piston is arranged in the booster cylinder body, and a main cylinder piston connected with the booster cylinder piston is arranged in the main cylinder body. The clutch slave cylinder is further provided with a booster air pressure inlet, a booster air channel, a control valve, a control air pressure inlet, a control air channel and a reversing valve. The booster air pressure inlet is communicated with the booster cylinder body through the booster air channel, the control valve controls on and off of the booster air pressure inlet and the booster air channel, the control air pressure inlet is communicated with the booster cylinder body through the control air channel, and the reversing valve is connected between the booster air channel and the control air channel. Besides, the reversing valve comprises a valve passage running through vertically, the booster air channel is communicated with the control air channel by the valve passage, and a reversing spool controlled by air pressure is arranged in the valve passage. With the clutch slave cylinder, switching between the hydraulic and air pressure hybrid drive mode and the pure air pressure drive mode of vehicles can be realized in a quick and labor-saving manner, work efficiency is increased, and running reliability of the vehicles is improved.

Description

technical field [0001] The invention relates to a clutch external control device, in particular to a clutch slave cylinder for a clutch on a hybrid vehicle. Background technique [0002] The structure of the traditional clutch cylinder in the prior art is such as the Chinese patent announcement number is CN200949613Y, the announcement date is September 19, 2007, and the name is "a kind of automobile clutch booster assembly". In the specification, an automobile clutch is disclosed. The booster includes a main cylinder and a booster cylinder coaxially connected with the main cylinder. The master cylinder is equipped with a master cylinder piston. The booster cylinder is equipped with a booster cylinder piston. The master cylinder piston is close to the rear of the booster cylinder piston. The end is connected to the piston of the booster cylinder. A return spring is connected between the inner wall of the front side of the booster cylinder and the piston of the booster cylinde...

AI Technical Summary

Problems solved by technology

[0002] The structure of the traditional clutch cylinder in the prior art is such as the Chinese patent announcement number is CN200949613Y, the announcement date is September 19, 2007, and the name is "a kind of automobile clutch booster assembly". In the specification, an automobile clutch is disclosed. The booster includes a main cylinder and a booster cylinder coaxially connected with the main cylinder. The master cylinder is equipped with a master cylinder piston. The booster cylinder is equipped with a booster cylinder piston. The master cylinder piston is close to the rear of the booster cylinder piston. The end is connected to the piston of the booster cylinder. A return spring is connected between the inner wall of the front side of the booster cylinder and the piston of the booster cylinder. The main cylinder is equipped with a booster air inlet. The booster air path between the air inlet and the booster cylinder and the control valve that controls the connection between the booster gas path and the booster air inlet. The rear end of the master cylinder piston is connected with a push rod, and the master cylinder is also equipped with a scale body , this traditional clutch cylinder can only be used in the driving mode of hydraulic oil and air pressure, while the clutch cylinders used in existing hybrid vehicles are all cylinder type, that is, pneumatic piston push rod type, long Time work is easy to be damaged, and the sub-pump with cylinder structure can only be applied to run in the pneumatic drive mode. Since the development of new energy vehicles is not too mature, there will often be problems of one kind or another, and the vehicle will often fail to operate normally on the road. When the working condition of the vehicle fails, it can only be stopped for maintenance, which will cause a huge waste of manpower and material resources, increase the operating cost of the vehicle, and make the reliability of the vehicle operation low.

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